East Vermillion Lake Weather Forecast

    • 74
    • 96

    Gradual Clearing

    • 72
    • 94

    Patchy Smoke

    • 69
    • 91

    Partly Sunny

    • 71
    • 92

    Partly Sunny

    • 67
    • 85

    Chance Thunderstorms

    • 65
    • 85

    Mostly Sunny

Today 26 Jul McCook

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms this Morning, then mostly sunny this afternoon. Hot with Highs in the upper 90s. South Winds 10 to 15 Mph. Chance of rain 20 percent. Heat index Values up to 111 this afternoon.

Tonight 26 Jul McCook

Mostly clear. Humid with Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 111 early in the evening.

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East Vermillion Lake Temperature Statistics

July Temperature

Sioux Falls, Foss Field (20.5 miles)

  • Lowest 23 July, 2026

    57.9 °F

  • Average July

    77.1 °F

  • Highest 17 July, 2026

    95.6 °F

Climate (2021–2026)

Sioux Falls, Foss Field (20.5 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    61 °F
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